mtg doctor who planechase cards Pompeii | Commander with 50 brand TARDIS · Doctor Who (WHO)

You can go a bit more combo orientated and add cards like Concordant Crossroads and Thousand Year Elixir to speed everything up and even Earthcraft to further mimic that Heritage Druid effect

Inspired to build a new deck

However, I dont think all three of these are created equal

Think something like Wrath of God meets Armageddon meets mass discard

The first change is to the rules, and it is the only rules change: From now on, when the archenemy attacks any player or planeswalker on the opposing team, any creature a teammate of the defending player controls may be assigned as a blocker by that creature's controller

Is this a good place to start